Pennsylvania teen, married older man mysteriously missing, police say

Authorities in Allentown are seeking help from the public to locate a 16-year-old high school student and a 45-year-old married man who appear to have gone missing together on Monday morning.

Police said Amy Yu and Kevin Esterly were reported missing Monday and may be traveling together in a 1999 Red Honda Accord with the Pennsylvania plate number "KLT 0529." Investigators said both could be endangered.

The Morning Call in Allentown reported Wednesday that Yu, a student at Lehigh Valley Academy Charter School in Hanover Township, had been checked out of the school by Esterly 10 times between November and February, according to court documents.

Yu and Esterly reportedly have a "secretive relationship," court documents said, and the parents of the girl appear to be familiar with Esterly.